This is pretty damn scary but, according to local media, this video allegedly shows about ten Russian attack Mi- 24 Hind helicopters entering Ukrainian air space through Crimea, the autonomous Ukrainian republic where 58.5-percent of the population are ethnic Russians.

Update: The Daily Beast claims that the 2,000 Russian soldiers are part of a Russian "private military force," not actual soldiers from the Russian Army. Other people are saying that these are disguised Russian special forces.